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Finding the Fourth Proportional to 504,073.20, 756,109.80 and 389,911.80

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Solution

The fourth proportional to 504,073.20, 756,109.80 and 389,911.80 is: 584,867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,073.20 : 756,109.80 = 389,911.80 : x
  2. Step 2: Convert to fraction form
    504,073.20/756,109.80 = 389,911.80/x
  3. Step 3: Cross multiply
    504,073.20x = 756,109.80 × 389,911.80
  4. Step 4: Simplify right side
    504,073.20x = 294,816,133,115.64
  5. Step 5: Solve for x
    x = 294,816,133,115.64/504,073.20
  6. Step 6: Final answer
    x = 584,867.70

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.